12225651 has 16 divisors (see below), whose sum is σ = 16955904. Its totient is φ = 7828704.

The previous prime is 12225649. The next prime is 12225659. The reversal of 12225651 is 15652221.

It is a happy number.

It is not a de Polignac number, because 12225651 - 2¹ = 12225649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12225659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8550 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (1059744).

Almost surely, 2^12225651 is an apocalyptic number.

12225651 is a deficient number, since it is larger than the sum of its proper divisors (4730253).

12225651 is a wasteful number, since it uses less digits than its factorization.

12225651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

The product of its digits is 1200, while the sum is 24.

The square root of 12225651 is about 3496.5198412135. The cubic root of 12225651 is about 230.3689792642.

Adding to 12225651 its reverse (15652221), we get a palindrome (27877872).

The spelling of 12225651 in words is "twelve million, two hundred twenty-five thousand, six hundred fifty-one".